(BUG) # of Threads -Auto Select only using 1 thread

I just tried using PA2017 to create a .pa extreme compression archive of a DSF file.
I left # of threads at Auto Select and it used 1 thread (25% CPU usage)
I cancelled that and created it again, this time manually selecting 4 threads and now it’s using 100% of the CPU.

I just tried using PA2017 to create a .pa extreme compression archive of a DSF file.
I left # of threads at Auto Select and it used 1 thread (25% CPU usage)
I cancelled that and created it again, this time manually selecting 4 threads and now it’s using 100% of the CPU.

how large is the file?

Using mt will quite often increase the size of the file, so chunk size (amount of each thread gets) gets increased based on strength setting, in relation to dictionary size.

however you can manually force usage by selecting manually number of threads, and PA will respect that.

I can’t do that at work as I don’t have Admin access on that computer so can only use portable version of PA, which isn’t ready for 2018 yet. I can however try the same thing on my home computer later on tonight

Okay, so there’s really no gains in compression speed here, since the outcome we would want is smallest size.
I’ll leave this as normal then on this computer.
Once PA 2018 portable comes out, I’ll try again on these lower end CPUs at work, which did see large gains forcing 4 threads.